libavcodec/libamr.c

   1 /*
   2  * AMR Audio decoder stub
   3  * Copyright (c) 2003 the ffmpeg project
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22  /** @file
  23  * Adaptive Multi-Rate (AMR) Audio decoder stub.
  24  *
  25  * This code implements both an AMR-NarrowBand (AMR-NB) and an AMR-WideBand
  26  * (AMR-WB) audio encoder/decoder through external reference code from
  27  * http://www.3gpp.org/. The license of the code from 3gpp is unclear so you
  28  * have to download the code separately. Two versions exists: One fixed-point
  29  * and one floating-point. For some reason the float encoder is significantly
  30  * faster at least on a P4 1.5GHz (0.9s instead of 9.9s on a 30s audio clip
  31  * at MR102). Both float and fixed point are supported for AMR-NB, but only
  32  * float for AMR-WB.
  33  *
  34  * \section AMR-NB
  35  *
  36  * \subsection Float
  37  * The float version (default) can be downloaded from:
  38  * http://www.3gpp.org/ftp/Specs/archive/26_series/26.104/26104-610.zip
  39  *
  40  * \subsection Fixed-point
  41  * The fixed-point (TS26.073) can be downloaded from:
  42  * http://www.3gpp.org/ftp/Specs/archive/26_series/26.073/26073-600.zip
  43  *
  44  * \subsection Specification
  45  * The specification for AMR-NB can be found in TS 26.071
  46  * (http://www.3gpp.org/ftp/Specs/html-info/26071.htm) and some other
  47  * info at http://www.3gpp.org/ftp/Specs/html-info/26-series.htm.
  48  *
  49  * \section AMR-WB
  50  *
  51  * \subsection Float
  52  * The reference code can be downloaded from:
  53  * http://www.3gpp.org/ftp/Specs/archive/26_series/26.204/26204-600.zip
  54  *
  55  * \subsection Fixed-point
  56  * If someone wants to use the fixed point version it can be downloaded from:
  57  * http://www.3gpp.org/ftp/Specs/archive/26_series/26.173/26173-571.zip.
  58  *
  59  * \subsection Specification
  60  * The specification for AMR-WB can be found in TS 26.171
  61  * (http://www.3gpp.org/ftp/Specs/html-info/26171.htm) and some other
  62  * info at http://www.3gpp.org/ftp/Specs/html-info/26-series.htm.
  63  *
  64  */
  65
  66 #include "avcodec.h"
  67
  68 #if CONFIG_LIBAMR_NB_FIXED
  69
  70 #define MMS_IO
  71
  72 #include "amr/sp_dec.h"
  73 #include "amr/d_homing.h"
  74 #include "amr/typedef.h"
  75 #include "amr/sp_enc.h"
  76 #include "amr/sid_sync.h"
  77 #include "amr/e_homing.h"
  78
  79 #else
  80 #include <amrnb/interf_dec.h>
  81 #include <amrnb/interf_enc.h>
  82 #endif
  83
  84 static const char nb_bitrate_unsupported[] =
  85     "bitrate not supported: use one of 4.75k, 5.15k, 5.9k, 6.7k, 7.4k, 7.95k, 10.2k or 12.2k\n";
  86 static const char wb_bitrate_unsupported[] =
  87     "bitrate not supported: use one of 6.6k, 8.85k, 12.65k, 14.25k, 15.85k, 18.25k, 19.85k, 23.05k, or 23.85k\n";
  88
  89 /* Common code for fixed and float version*/
  90 typedef struct AMR_bitrates
  91 {
  92     int rate;
  93     enum Mode mode;
  94 } AMR_bitrates;
  95
  96 /* Match desired bitrate */
  97 static int getBitrateMode(int bitrate)
  98 {
  99     /* make the correspondance between bitrate and mode */
 100     AMR_bitrates rates[]={ {4750,MR475},
 101                            {5150,MR515},
 102                            {5900,MR59},
 103                            {6700,MR67},
 104                            {7400,MR74},
 105                            {7950,MR795},
 106                            {10200,MR102},
 107                            {12200,MR122},
 108                          };
 109     int i;
 110
 111     for(i=0;i<8;i++)
 112     {
 113         if(rates[i].rate==bitrate)
 114         {
 115             return rates[i].mode;
 116         }
 117     }
 118     /* no bitrate matching, return an error */
 119     return -1;
 120 }
 121
 122 static void amr_decode_fix_avctx(AVCodecContext * avctx)
 123 {
 124     const int is_amr_wb = 1 + (avctx->codec_id == CODEC_ID_AMR_WB);
 125
 126     if(avctx->sample_rate == 0)
 127     {
 128         avctx->sample_rate = 8000 * is_amr_wb;
 129     }
 130
 131     if(avctx->channels == 0)
 132     {
 133         avctx->channels = 1;
 134     }
 135
 136     avctx->frame_size = 160 * is_amr_wb;
 137     avctx->sample_fmt = SAMPLE_FMT_S16;
 138 }
 139
 140 #if CONFIG_LIBAMR_NB_FIXED
 141 /* fixed point version*/
 142 /* frame size in serial bitstream file (frame type + serial stream + flags) */
 143 #define SERIAL_FRAMESIZE (1+MAX_SERIAL_SIZE+5)
 144
 145 typedef struct AMRContext {
 146     int frameCount;
 147     Speech_Decode_FrameState *speech_decoder_state;
 148     enum RXFrameType rx_type;
 149     enum Mode mode;
 150     Word16 reset_flag;
 151     Word16 reset_flag_old;
 152
 153     int enc_bitrate;
 154     Speech_Encode_FrameState *enstate;
 155     sid_syncState *sidstate;
 156     enum TXFrameType tx_frametype;
 157 } AMRContext;
 158
 159 static av_cold int amr_nb_decode_init(AVCodecContext * avctx)
 160 {
 161     AMRContext *s = avctx->priv_data;
 162
 163     s->frameCount=0;
 164     s->speech_decoder_state=NULL;
 165     s->rx_type = (enum RXFrameType)0;
 166     s->mode= (enum Mode)0;
 167     s->reset_flag=0;
 168     s->reset_flag_old=1;
 169
 170     if(Speech_Decode_Frame_init(&s->speech_decoder_state, "Decoder"))
 171     {
 172         av_log(avctx, AV_LOG_ERROR, "Speech_Decode_Frame_init error\n");
 173         return -1;
 174     }
 175
 176     amr_decode_fix_avctx(avctx);
 177
 178     if(avctx->channels > 1)
 179     {
 180         av_log(avctx, AV_LOG_ERROR, "amr_nb: multichannel decoding not supported\n");
 181         return -1;
 182     }
 183
 184     return 0;
 185 }
 186
 187 static av_cold int amr_nb_encode_init(AVCodecContext * avctx)
 188 {
 189     AMRContext *s = avctx->priv_data;
 190
 191     s->frameCount=0;
 192     s->speech_decoder_state=NULL;
 193     s->rx_type = (enum RXFrameType)0;
 194     s->mode= (enum Mode)0;
 195     s->reset_flag=0;
 196     s->reset_flag_old=1;
 197
 198     if(avctx->sample_rate!=8000)
 199     {
 200         av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n");
 201         return -1;
 202     }
 203
 204     if(avctx->channels!=1)
 205     {
 206         av_log(avctx, AV_LOG_ERROR, "Only mono supported\n");
 207         return -1;
 208     }
 209
 210     avctx->frame_size=160;
 211     avctx->coded_frame= avcodec_alloc_frame();
 212
 213     if(Speech_Encode_Frame_init(&s->enstate, 0, "encoder") || sid_sync_init (&s->sidstate))
 214     {
 215         av_log(avctx, AV_LOG_ERROR, "Speech_Encode_Frame_init error\n");
 216         return -1;
 217     }
 218
 219     if((s->enc_bitrate=getBitrateMode(avctx->bit_rate))<0)
 220     {
 221         av_log(avctx, AV_LOG_ERROR, nb_bitrate_unsupported);
 222         return -1;
 223     }
 224
 225     return 0;
 226 }
 227
 228 static av_cold int amr_nb_encode_close(AVCodecContext * avctx)
 229 {
 230     AMRContext *s = avctx->priv_data;
 231
 232     Speech_Encode_Frame_exit(&s->enstate);
 233     sid_sync_exit (&s->sidstate);
 234     av_freep(&avctx->coded_frame);
 235     return 0;
 236 }
 237
 238 static av_cold int amr_nb_decode_close(AVCodecContext * avctx)
 239 {
 240     AMRContext *s = avctx->priv_data;
 241
 242     Speech_Decode_Frame_exit(&s->speech_decoder_state);
 243     return 0;
 244 }
 245
 246 static int amr_nb_decode_frame(AVCodecContext * avctx,
 247             void *data, int *data_size,
 248             AVPacket *avpkt)
 249 {
 250     const uint8_t *buf = avpkt->data;
 251     int buf_size = avpkt->size;
 252     AMRContext *s = avctx->priv_data;
 253     const uint8_t*amrData=buf;
 254     int offset=0;
 255     UWord8 toc, q, ft;
 256     Word16 serial[SERIAL_FRAMESIZE];   /* coded bits */
 257     Word16 *synth;
 258     UWord8 *packed_bits;
 259     static Word16 packed_size[16] = {12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0};
 260     int i;
 261
 262     //printf("amr_decode_frame data_size=%i buf=0x%X buf_size=%d frameCount=%d!!\n",*data_size,buf,buf_size,s->frameCount);
 263
 264     synth=data;
 265
 266     toc=amrData[offset];
 267     /* read rest of the frame based on ToC byte */
 268     q  = (toc >> 2) & 0x01;
 269     ft = (toc >> 3) & 0x0F;
 270
 271     //printf("offset=%d, packet_size=%d amrData= 0x%X %X %X %X\n",offset,packed_size[ft],amrData[offset],amrData[offset+1],amrData[offset+2],amrData[offset+3]);
 272
 273     offset++;
 274
 275     packed_bits=amrData+offset;
 276
 277     offset+=packed_size[ft];
 278
 279     //Unsort and unpack bits
 280     s->rx_type = UnpackBits(q, ft, packed_bits, &s->mode, &serial[1]);
 281
 282     //We have a new frame
 283     s->frameCount++;
 284
 285     if (s->rx_type == RX_NO_DATA)
 286     {
 287         s->mode = s->speech_decoder_state->prev_mode;
 288     }
 289     else {
 290         s->speech_decoder_state->prev_mode = s->mode;
 291     }
 292
 293     /* if homed: check if this frame is another homing frame */
 294     if (s->reset_flag_old == 1)
 295     {
 296         /* only check until end of first subframe */
 297         s->reset_flag = decoder_homing_frame_test_first(&serial[1], s->mode);
 298     }
 299     /* produce encoder homing frame if homed & input=decoder homing frame */
 300     if ((s->reset_flag != 0) && (s->reset_flag_old != 0))
 301     {
 302         for (i = 0; i < L_FRAME; i++)
 303         {
 304             synth[i] = EHF_MASK;
 305         }
 306     }
 307     else
 308     {
 309         /* decode frame */
 310         Speech_Decode_Frame(s->speech_decoder_state, s->mode, &serial[1], s->rx_type, synth);
 311     }
 312
 313     //Each AMR-frame results in 160 16-bit samples
 314     *data_size=160*2;
 315
 316     /* if not homed: check whether current frame is a homing frame */
 317     if (s->reset_flag_old == 0)
 318     {
 319         /* check whole frame */
 320         s->reset_flag = decoder_homing_frame_test(&serial[1], s->mode);
 321     }
 322     /* reset decoder if current frame is a homing frame */
 323     if (s->reset_flag != 0)
 324     {
 325         Speech_Decode_Frame_reset(s->speech_decoder_state);
 326     }
 327     s->reset_flag_old = s->reset_flag;
 328
 329     return offset;
 330 }
 331
 332
 333 static int amr_nb_encode_frame(AVCodecContext *avctx,
 334                             unsigned char *frame/*out*/, int buf_size, void *data/*in*/)
 335 {
 336     short serial_data[250] = {0};
 337     AMRContext *s = avctx->priv_data;
 338     int written;
 339
 340     s->reset_flag = encoder_homing_frame_test(data);
 341
 342     Speech_Encode_Frame(s->enstate, s->enc_bitrate, data, &serial_data[1], &s->mode);
 343
 344     /* add frame type and mode */
 345     sid_sync (s->sidstate, s->mode, &s->tx_frametype);
 346
 347     written = PackBits(s->mode, s->enc_bitrate, s->tx_frametype, &serial_data[1], frame);
 348
 349     if (s->reset_flag != 0)
 350     {
 351         Speech_Encode_Frame_reset(s->enstate);
 352         sid_sync_reset(s->sidstate);
 353     }
 354     return written;
 355 }
 356
 357
 358 #elif CONFIG_LIBAMR_NB /* Float point version*/
 359
 360 typedef struct AMRContext {
 361     int frameCount;
 362     void * decState;
 363     int *enstate;
 364     int enc_bitrate;
 365 } AMRContext;
 366
 367 static av_cold int amr_nb_decode_init(AVCodecContext * avctx)
 368 {
 369     AMRContext *s = avctx->priv_data;
 370
 371     s->frameCount=0;
 372     s->decState=Decoder_Interface_init();
 373     if(!s->decState)
 374     {
 375         av_log(avctx, AV_LOG_ERROR, "Decoder_Interface_init error\r\n");
 376         return -1;
 377     }
 378
 379     amr_decode_fix_avctx(avctx);
 380
 381     if(avctx->channels > 1)
 382     {
 383         av_log(avctx, AV_LOG_ERROR, "amr_nb: multichannel decoding not supported\n");
 384         return -1;
 385     }
 386
 387     return 0;
 388 }
 389
 390 static av_cold int amr_nb_encode_init(AVCodecContext * avctx)
 391 {
 392     AMRContext *s = avctx->priv_data;
 393
 394     s->frameCount=0;
 395
 396     if(avctx->sample_rate!=8000)
 397     {
 398         av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n");
 399         return -1;
 400     }
 401
 402     if(avctx->channels!=1)
 403     {
 404         av_log(avctx, AV_LOG_ERROR, "Only mono supported\n");
 405         return -1;
 406     }
 407
 408     avctx->frame_size=160;
 409     avctx->coded_frame= avcodec_alloc_frame();
 410
 411     s->enstate=Encoder_Interface_init(0);
 412     if(!s->enstate)
 413     {
 414         av_log(avctx, AV_LOG_ERROR, "Encoder_Interface_init error\n");
 415         return -1;
 416     }
 417
 418     if((s->enc_bitrate=getBitrateMode(avctx->bit_rate))<0)
 419     {
 420         av_log(avctx, AV_LOG_ERROR, nb_bitrate_unsupported);
 421         return -1;
 422     }
 423
 424     return 0;
 425 }
 426
 427 static av_cold int amr_nb_decode_close(AVCodecContext * avctx)
 428 {
 429     AMRContext *s = avctx->priv_data;
 430
 431     Decoder_Interface_exit(s->decState);
 432     return 0;
 433 }
 434
 435 static av_cold int amr_nb_encode_close(AVCodecContext * avctx)
 436 {
 437     AMRContext *s = avctx->priv_data;
 438
 439     Encoder_Interface_exit(s->enstate);
 440     av_freep(&avctx->coded_frame);
 441     return 0;
 442 }
 443
 444 static int amr_nb_decode_frame(AVCodecContext * avctx,
 445             void *data, int *data_size,
 446             AVPacket *avpkt)
 447 {
 448     const uint8_t *buf = avpkt->data;
 449     int buf_size = avpkt->size;
 450     AMRContext *s = avctx->priv_data;
 451     const uint8_t*amrData=buf;
 452     static const uint8_t block_size[16]={ 12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0 };
 453     enum Mode dec_mode;
 454     int packet_size;
 455
 456     /* av_log(NULL,AV_LOG_DEBUG,"amr_decode_frame buf=%p buf_size=%d frameCount=%d!!\n",buf,buf_size,s->frameCount); */
 457
 458     dec_mode = (buf[0] >> 3) & 0x000F;
 459     packet_size = block_size[dec_mode]+1;
 460
 461     if(packet_size > buf_size) {
 462         av_log(avctx, AV_LOG_ERROR, "amr frame too short (%u, should be %u)\n", buf_size, packet_size);
 463         return -1;
 464     }
 465
 466     s->frameCount++;
 467     /* av_log(NULL,AV_LOG_DEBUG,"packet_size=%d amrData= 0x%X %X %X %X\n",packet_size,amrData[0],amrData[1],amrData[2],amrData[3]); */
 468     /* call decoder */
 469     Decoder_Interface_Decode(s->decState, amrData, data, 0);
 470     *data_size=160*2;
 471
 472     return packet_size;
 473 }
 474
 475 static int amr_nb_encode_frame(AVCodecContext *avctx,
 476                             unsigned char *frame/*out*/, int buf_size, void *data/*in*/)
 477 {
 478     AMRContext *s = avctx->priv_data;
 479     int written;
 480
 481     if((s->enc_bitrate=getBitrateMode(avctx->bit_rate))<0)
 482     {
 483         av_log(avctx, AV_LOG_ERROR, nb_bitrate_unsupported);
 484         return -1;
 485     }
 486
 487     written = Encoder_Interface_Encode(s->enstate,
 488         s->enc_bitrate,
 489         data,
 490         frame,
 491         0);
 492     /* av_log(NULL,AV_LOG_DEBUG,"amr_nb_encode_frame encoded %u bytes, bitrate %u, first byte was %#02x\n",written, s->enc_bitrate, frame[0] ); */
 493
 494     return written;
 495 }
 496
 497 #endif
 498
 499 #if CONFIG_LIBAMR_NB || CONFIG_LIBAMR_NB_FIXED
 500
 501 AVCodec libamr_nb_decoder =
 502 {
 503     "libamr_nb",
 504     CODEC_TYPE_AUDIO,
 505     CODEC_ID_AMR_NB,
 506     sizeof(AMRContext),
 507     amr_nb_decode_init,
 508     NULL,
 509     amr_nb_decode_close,
 510     amr_nb_decode_frame,
 511     .long_name = NULL_IF_CONFIG_SMALL("libamr-nb Adaptive Multi-Rate (AMR) Narrow-Band"),
 512 };
 513
 514 AVCodec libamr_nb_encoder =
 515 {
 516     "libamr_nb",
 517     CODEC_TYPE_AUDIO,
 518     CODEC_ID_AMR_NB,
 519     sizeof(AMRContext),
 520     amr_nb_encode_init,
 521     amr_nb_encode_frame,
 522     amr_nb_encode_close,
 523     NULL,
 524     .sample_fmts = (enum SampleFormat[]){SAMPLE_FMT_S16,SAMPLE_FMT_NONE},
 525     .long_name = NULL_IF_CONFIG_SMALL("libamr-nb Adaptive Multi-Rate (AMR) Narrow-Band"),
 526 };
 527
 528 #endif
 529
 530 /* -----------AMR wideband ------------*/
 531 #if CONFIG_LIBAMR_WB
 532
 533 #ifdef _TYPEDEF_H
 534 //To avoid duplicate typedefs from typedef in amr-nb
 535 #define typedef_h
 536 #endif
 537
 538 #include <amrwb/enc_if.h>
 539 #include <amrwb/dec_if.h>
 540 #include <amrwb/if_rom.h>
 541
 542 /* Common code for fixed and float version*/
 543 typedef struct AMRWB_bitrates
 544 {
 545     int rate;
 546     int mode;
 547 } AMRWB_bitrates;
 548
 549 static int getWBBitrateMode(int bitrate)
 550 {
 551     /* make the correspondance between bitrate and mode */
 552     AMRWB_bitrates rates[]={ {6600,0},
 553                            {8850,1},
 554                            {12650,2},
 555                            {14250,3},
 556                            {15850,4},
 557                            {18250,5},
 558                            {19850,6},
 559                            {23050,7},
 560                            {23850,8},
 561                          };
 562     int i;
 563
 564     for(i=0;i<9;i++)
 565     {
 566         if(rates[i].rate==bitrate)
 567         {
 568             return rates[i].mode;
 569         }
 570     }
 571     /* no bitrate matching, return an error */
 572     return -1;
 573 }
 574
 575
 576 typedef struct AMRWBContext {
 577     int frameCount;
 578     void *state;
 579     int mode;
 580     Word16 allow_dtx;
 581 } AMRWBContext;
 582
 583 static int amr_wb_encode_init(AVCodecContext * avctx)
 584 {
 585     AMRWBContext *s = avctx->priv_data;
 586
 587     s->frameCount=0;
 588
 589     if(avctx->sample_rate!=16000)
 590     {
 591         av_log(avctx, AV_LOG_ERROR, "Only 16000Hz sample rate supported\n");
 592         return -1;
 593     }
 594
 595     if(avctx->channels!=1)
 596     {
 597         av_log(avctx, AV_LOG_ERROR, "Only mono supported\n");
 598         return -1;
 599     }
 600
 601     if((s->mode=getWBBitrateMode(avctx->bit_rate))<0)
 602     {
 603         av_log(avctx, AV_LOG_ERROR, wb_bitrate_unsupported);
 604         return -1;
 605     }
 606
 607     avctx->frame_size=320;
 608     avctx->coded_frame= avcodec_alloc_frame();
 609
 610     s->state = E_IF_init();
 611     s->allow_dtx=0;
 612
 613     return 0;
 614 }
 615
 616 static int amr_wb_encode_close(AVCodecContext * avctx)
 617 {
 618     AMRWBContext *s = avctx->priv_data;
 619
 620     E_IF_exit(s->state);
 621     av_freep(&avctx->coded_frame);
 622     s->frameCount++;
 623     return 0;
 624 }
 625
 626 static int amr_wb_encode_frame(AVCodecContext *avctx,
 627                             unsigned char *frame/*out*/, int buf_size, void *data/*in*/)
 628 {
 629     AMRWBContext *s = avctx->priv_data;
 630     int size;
 631
 632     if((s->mode=getWBBitrateMode(avctx->bit_rate))<0)
 633     {
 634         av_log(avctx, AV_LOG_ERROR, wb_bitrate_unsupported);
 635         return -1;
 636     }
 637     size = E_IF_encode(s->state, s->mode, data, frame, s->allow_dtx);
 638     return size;
 639 }
 640
 641 static int amr_wb_decode_init(AVCodecContext * avctx)
 642 {
 643     AMRWBContext *s = avctx->priv_data;
 644
 645     s->frameCount=0;
 646     s->state = D_IF_init();
 647
 648     amr_decode_fix_avctx(avctx);
 649
 650     if(avctx->channels > 1)
 651     {
 652         av_log(avctx, AV_LOG_ERROR, "amr_wb: multichannel decoding not supported\n");
 653         return -1;
 654     }
 655
 656     return 0;
 657 }
 658
 659 static int amr_wb_decode_frame(AVCodecContext * avctx,
 660             void *data, int *data_size,
 661             AVPacket *avpkt)
 662 {
 663     const uint8_t *buf = avpkt->data;
 664     int buf_size = avpkt->size;
 665     AMRWBContext *s = avctx->priv_data;
 666     const uint8_t*amrData=buf;
 667     int mode;
 668     int packet_size;
 669     static const uint8_t block_size[16] = {18, 23, 33, 37, 41, 47, 51, 59, 61, 6, 6, 0, 0, 0, 1, 1};
 670
 671     if(buf_size==0) {
 672         /* nothing to do */
 673         return 0;
 674     }
 675
 676     mode = (amrData[0] >> 3) & 0x000F;
 677     packet_size = block_size[mode];
 678
 679     if(packet_size > buf_size) {
 680         av_log(avctx, AV_LOG_ERROR, "amr frame too short (%u, should be %u)\n", buf_size, packet_size+1);
 681         return -1;
 682     }
 683
 684     s->frameCount++;
 685     D_IF_decode( s->state, amrData, data, _good_frame);
 686     *data_size=320*2;
 687     return packet_size;
 688 }
 689
 690 static int amr_wb_decode_close(AVCodecContext * avctx)
 691 {
 692     AMRWBContext *s = avctx->priv_data;
 693
 694     D_IF_exit(s->state);
 695     return 0;
 696 }
 697
 698 AVCodec libamr_wb_decoder =
 699 {
 700     "libamr_wb",
 701     CODEC_TYPE_AUDIO,
 702     CODEC_ID_AMR_WB,
 703     sizeof(AMRWBContext),
 704     amr_wb_decode_init,
 705     NULL,
 706     amr_wb_decode_close,
 707     amr_wb_decode_frame,
 708     .long_name = NULL_IF_CONFIG_SMALL("libamr-wb Adaptive Multi-Rate (AMR) Wide-Band"),
 709 };
 710
 711 AVCodec libamr_wb_encoder =
 712 {
 713     "libamr_wb",
 714     CODEC_TYPE_AUDIO,
 715     CODEC_ID_AMR_WB,
 716     sizeof(AMRWBContext),
 717     amr_wb_encode_init,
 718     amr_wb_encode_frame,
 719     amr_wb_encode_close,
 720     NULL,
 721     .sample_fmts = (enum SampleFormat[]){SAMPLE_FMT_S16,SAMPLE_FMT_NONE},
 722     .long_name = NULL_IF_CONFIG_SMALL("libamr-wb Adaptive Multi-Rate (AMR) Wide-Band"),
 723 };
 724
 725 #endif //CONFIG_LIBAMR_WB